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FreeArc,
PAQ, UPX, Zstandard... free alternative to WinRar, WinZip </small><small>and
similar
proprietary software</small><small>.<br>
- Create 7Z, ARC, Brotli BR, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX,
WIM, XZ, ZIP, Zstandard
files<br>
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            <h1 style="text-align: center;"><big><big><big><a
 name="br_file_extension"></a>What is BR format, Brotli compressed files<br>
            </big></big></big></h1>
            <br>
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            <div> </div>
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                  <ul>
                    <li>
                      <p><a href="#brotli_compression">WHAT ARE BR
FILES, BROTLI COMPRESSION ALGORITHM<br>
                      </a></p>
                    </li>
                  </ul>
                  </td>
                  <td style="vertical-align: top; width: 128px;">
                  <h2><img title="What is .BR file extension"
 alt="BR extension" src="file-format/file-format.png"
 style="width: 96px; height: 96px;" align="right"></h2>
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            <div style="text-align: left; color: rgb(0, 0, 0);">
            <h2><big><big><big><a name="brotli_compression"></a><a
 href="#br_file_extension">What
are BR
files, Brotli compression algorithm</a></big></big><br>
            </big></h2>
            </div>
            <br>
            <div style="text-align: left;"> </div>
            <div style="text-align: left;"> </div>
            <a name="what_is_a_br_file"></a><span
 style="font-weight: bold;">BR</span> extension
designates a <span style="background-color: rgb(255, 238, 221);">pure
data compression format not
providing file archival nor encryption features</span>.<br>
            <span style="font-weight: bold;">Brotli </span>compression
algorithm was developed by Google continuing and superseding
previous <span style="font-weight: bold;">Zopfli </span>project
(which was meant for compatibility with standard zlib GZip /&nbsp;
Deflate specifications) in order to provide a more flexible compression
algorithm, capable both of high speed at low compression settings, and
improved (better than Deflate) compression ratio at higher compression
settings. Extraction of Brotli-compressed files is also extremely fast.<br>
            <br>
            <a name="google_brotli_compression_specs"></a>Brotli-compressed
files are usually identified by .br extension, and can
contain a single input file; to overcome this by-design limitation
PeaZip automatically cascades Brotli compression with TAR archiving if
multiple files or folders are sent as input for BR file creation,
resulting in a .tar.br archive; learn more about <a
 href="files-with-double-extension.html">files with double extension</a>.<br>
In this two step process, input files are consolideted in a single TAR
archive (very fast, as no compression is involved), which is then
compresed by Brotly in the second step. On a related note, this
procedure improves compression ratio over compressing each input file
separately, read more about this topic on <a
 href="what-is-solid-compression.html">solid compression</a> page.<br>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="24" cellspacing="0">
              <tbody>
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 style="vertical-align: top; text-align: right; width: 128px;">
                  <h2><span style="font-weight: bold;"><img
 title="What is BR file format, Brotli compression algorithm"
 alt="what is a br file" src="file-format/quotes.png"
 style="width: 32px; height: 32px;"></span></h2>
                  </td>
                  <td style="vertical-align: top; font-style: italic;">
                  <h3><span style="font-weight: bold;">When is Brotli
compression
recommended</span></h3>
Google Brotli compression should be considered as viable alternative to
Zopfli and Deflate (Gzip, ZIP) when maximum compression / extraction
speed and efficiency is desired.<br>
Both Brotli and its competitor Facebook's Zstandard outperforms classic
zlib / Deflate in fast, near real time data compression and
decompression.<br>
                  </td>
                  <td style="vertical-align: bottom; width: 128px;"> <img
 title="Brotli BR format features and specifications"
 alt="br files features" src="file-format/quotes-inverse.png"
 style="width: 32px; height: 32px;"> </td>
                </tr>
              </tbody>
            </table>
            <a name="br_format_specifications"></a>Read more about
.br file type on <a target="_blank"
 href="https://github.com/google/brotli">Google Brotli
official repository<img title="Google Brotli official repository"
 alt="Brotli online" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>, and <a
 target="_blank" href="https://en.wikipedia.org/wiki/Brotli">Brotli
algorithm<img title="wiki Brotli algorithm"
 alt="Brotli compression wiki" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> entry on
Wikipedia.<br>
            <br>
            <span style="font-weight: bold;"></span>PeaZip features <a
 href="brotli-compression-utility.html">creation and
extraction of BR files</a>, can read (open, test and
extract) and write (compress to) BR file type relying on official
Google's Brotli implementations for Windows and Linux systems.<br>
            <h2><img title="Brotli compression"
 alt="what is brotli compression algorithm" src="add-to-archive.png"
 style="width: 100px; height: 45px;"></h2>
            <h3><img title="BR format features and specifications"
 alt="br format specifications" src="extract-archive.png"
 style="width: 112px; height: 45px;"></h3>
            <br>
            <table
 style="background-color: rgb(72, 136, 248); width: 100%; text-align: left;"
 border="0" cellpadding="0" cellspacing="1">
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                <tr style="color: rgb(245, 245, 245);">
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 style="vertical-align: top; background-color: rgb(72, 136, 248);">
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 border="0" cellpadding="0" cellspacing="0">
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                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;">&nbsp;&nbsp;
                        <br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <table style="width: 100%; text-align: left;"
 border="0" cellpadding="0" cellspacing="0">
                          <tbody>
                            <tr>
                              <td
 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">
                              <h3><big><big><big><big><big><a
 name="brotli_files"></a>.BR</big></big></big></big></big></h3>
                              </td>
                              <td
 style="width: 50%; color: rgb(245, 245, 245); vertical-align: middle;">Authors
Jyrki Alakuijala, Zolt&aacute;n Szabadka (Google), 2013<br>
limited to 1 single file as input<br>
                              </td>
                            </tr>
                          </tbody>
                        </table>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>SPEED <img
 alt="brotli fast compression" title="Brotli compression speed"
 src="zip-files/star5.png" style="width: 80px; height: 16px;"></big></h4>
Brotli excels in fast compression and clearly outperforms classic
Deflate providing comparable compression levels.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <h4><big>COMPRESSION
RATIO <img alt="Brotli algorithm performances"
 title="Brotli compression performances" src="zip-files/star4.png"
 style="width: 80px; height: 16px;"></big></h4>
Brotli algorithm provides flexible compression, with good compression
ratio (improved over Deflate) at higher compression settings.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td
 style="vertical-align: top; color: rgb(245, 245, 245); width: 430px;">
                        <big>ADVANCED
OPTIONS <img alt="brotli features" title="Google BR format options"
 src="zip-files/star1.png" style="width: 80px; height: 16px;"></big><br>
BR format is meant only for data streams or single-file compression,
lacks
archiving and encryption features by design.<br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 430px;"><br>
                        </td>
                        <td style="vertical-align: top; width: 24px;"><br>
                        </td>
                      </tr>
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                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="what-is-rar-file.html">WHAT IS WINRAR RAR FILE FORMAT</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="tar-file-format.html">WHAT IS TAR FILE EXTENSION</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="tar-windows.html">HOW TO COMPRESS TAR ARCHIVES</a><br>
                  </small></td>
                </tr>
              </tbody>
            </table>
            <small><small>&nbsp;</small></small><br>
            <table style="text-align: left;" border="0" cellpadding="6"
 cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="zip-file-format.html">ZIP FILE FORMAT</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="archive-file-formats-comparison.html">COMPARISON OF COMPRESSION
FORMATS FEATURES</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="files-with-double-extension.html">DOUBLE FILE EXTENSIONS</a><a
 href="tar-windows.html"><br>
                  </a></small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="what-is-solid-compression.html">SOLID COMPRESSION ADVANTAGES</a>
                  </small></td>
                </tr>
              </tbody>
            </table>
            <p> </p>
            <p><a href="peazip-help-faq.html">FAQ</a>
&gt; Archive file types &gt; What are Google Brotli BR compressed files</p>
Topics and search suggestions about what is BR file format (.br
extension), files compressed with Google's Brotli data compression
algorithm, what are Brotli compressed files features and
specifications:
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="6" cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> what is
br file format,<br>
what
are brotli compressed files,<br>
br file type specs,<br>
Google br format features, <br>
brotli compression algorithm, </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> Brotli
files
specifications,<br>
what are tar.br files,<br>
files compressed with brotli,<br>
characteristics of brotli function,<br>
brotli algorithm specifications,<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> faq
about google .br extension, <br>
what is Google's Brotli fast compression algorithm, <br>
brotli algorithm features,<br>
Google BR file type<br>
                  </td>
                  <td
 style="vertical-align: top; width: 25%; font-style: italic;"> faq
about brotli compressed files,<br>
what are br files,<br>
brotli algorithm faq,<br>
brotli compression,<br>
brotli br files<br>
                  </td>
                </tr>
              </tbody>
            </table>
            </td>
          </tr>
        </tbody>
      </table>
      <table
 style="background-color: rgb(255, 255, 255); margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr>
            <td style="vertical-align: top;">Tag Cloud <br>
            <span class="wrd free-rar4" id="br-file-format"> <a
 href="brotli-compressed-file-format.html">BR file format</a></span> <span
 class="wrd free-rar2" id="brotli-file-compressor-utility"> <a
 href="brotli-compression-utility.html">Brotli compression utility</a></span>
            <span class="wrd free-rar4" id="brotli-compressed-files"> <a
 href="brotli-compressed-file-format.html">Brotli compressed files</a></span>
            <span class="wrd free-rar0" id="what-is-br-file-extension">
            <a href="brotli-compressed-file-format.html">what is .br
extension</a></span> <span class="wrd free-rar1"
 id="free-zstandard-compression-utility"> <a
 href="zstandard-compression-utility.html">Zstandard compressor app</a></span>
            <br>
            <span class="wrd free-rar2" id="open-bz2-rar-zip-files"> <a
 href="how-to-open-rar-tar-zip-files.html">how to open bz2 rar tar zip
files</a></span> <span class="wrd free-rar1" id="7z extension"> <a
 href="7z-file-format.html">7Z extension</a></span> <span
 class="wrd free-rar0" id="file-hashing-checksum-tools"> <a
 href="verify-checksum-hash.html">checksum
hash tool</a></span> <span class="wrd free-rar1"
 id="convert-rar-zip-archive"> <a href="convert-files.html">convert
Brotli files</a></span> <span class="wrd free-rar3"
 id="free-file-archiver-software"> <a href="index.html">free file
archiver</a></span> <span class="wrd free-rar4" id="zpaq-file-fomat"> <a
 href="paq-file-format.html">ZPAQ file format</a></span> <br>
            <span class="wrd free-rar2" id="open-encrypted-rar-zip-file">
            <a href="extract-encrypted-files.html">extract encrypted
file</a></span> <span class="wrd free-rar1"
 id="how-to-extract-archives"> <a
 href="how-to-extract-rar-zip-archives.html">extract BZ2 TAR ZIP files</a></span>
            <span class="wrd free-rar3"
 id="download-free-rar-files-utility"> <a href="index.html">download
free RAR software</a></span> <span class="wrd free-rar0"
 id="open-source-encryption-software"> <a href="encrypt-files.html">how
to encrypt files</a></span> <span class="wrd free-rar1"
 id="split-file-spanning-how-to"> <a href="file-split.html">how to
split files</a></span> <span class="wrd free-rar2"
 id="extract-7z-files"> <a href="7zip-files-utility.html">extract 7Z
files</a></span><br>
            <span class="wrd free-rar3"
 id="free-rar-files-extraction-utility"> <a href="free-rar.html">free
RAR files opener</a></span> <span class="wrd free-rar2"
 id="free-zip-files-extraction-utility"> <a
 href="zip-files-utility.html">open ZIP files</a></span> <span
 class="wrd free-rar0" id="portable-rar-files-software"> <a
 href="peazip-portable.html">portable RAR TAR ZIP files software</a></span>
            <span class="wrd free-rar2" id="what-is-rar-file-extension">
            <a href="what-is-rar-file.html">RAR file format</a></span> <span
 class="wrd free-rar1" id="secure-file-deletion-program"> <a
 href="secure-delete.html">secure
delete</a></span> <span class="wrd free-rar3"
 id="how-to-create-tar-files"> <a href="tar-windows.html">create TAR
file</a></span> <br>
            <span class="wrd free-rar2" id="what-is-zip-file-type"> <a
 href="zip-file-format.html">what is
ZIP format</a></span> <span class="wrd free-rar1"
 id="file-compression-utility"> <a href="index.html">file compression
utility</a></span> <span class="wrd free-rar0" id="extract-zipx-files">
            <a href="zipx-files-software.html">extract ZIPX archives</a></span>
            <span class="wrd free-rar3" id="file-compression-benchmark">
            <a href="peazip-compression-benchmark.html">file
compression benchmark</a></span> <span class="wrd free-rar1"
 id="solid-compression-option"> <a
 href="what-is-solid-compression.html">solid compression option</a></span>
            <span class="wrd free-rar2" id="gzip-utility"> <a
 href="gzip-utility.html">GZip utility</a></span> <br>
            <span class="wrd free-rar0" id="what-is-compressed-file"> <a
 href="what-is-zip-file.html">what is a compressed file</a></span> <span
 class="wrd free-rar1" id="archive-formats-comparison"> <a
 href="archive-file-formats-comparison.html">archive
format comparison</a></span> <span class="wrd free-rar3"
 id="pea-file-format"> <a href="pea-file-format.html">PEA encrypted
file format</a></span> <span class="wrd free-rar0"
 id="linux-file-compression-utility"> <a href="peazip-linux.html">linux
file compression utility</a></span> <span class="wrd free-rar3"
 id="windows-tar-files-opener"> <a href="tar-windows.html">TAR files
opener</a></span> <br>
            <span class="wrd free-rar3"
 id="fastest-file-compression-utility"> <a
 href="peazip-compression-benchmark.html">fastest compression
algorithms</a></span> <span class="wrd free-rar0"
 id="tar-zip-maximun-input-files-limit"> <a
 href="rar-zip-file-format-size-limitations.html">max number of files
in 7Z RAR TAR ZIP archives</a></span> <span class="wrd free-rar2"
 id="ZSTD-compressed-file-format"> <a
 href="zst-compressed-file-format.html">ZST file format</a></span> <span
 class="wrd free-rar3" id="gz-file-type"> <a href="gzip-files.html">.GZ
extension</a></span> <span class="wrd free-rar0" id="unzip-cab-files">
            <a href="cab-files-utility.html">unzip
CAB file</a></span><br>
            <span class="wrd free-rar4"
 id="brotli-zstd-speed-comparative-test"> <a
 href="fast-compression-benchmark-brotli-zstandard.html">Brotli
Zstandard
comparative speed test</a></span><br>
            </td>
          </tr>
        </tbody>
      </table>
      <br>
      </td>
    </tr>
    <tr align="center">
      <td
 style="vertical-align: top; background-color: rgb(243, 242, 241);">
      <table
 style="margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
 border="0" cellpadding="0" cellspacing="0">
        <tbody>
          <tr>
            <td style="vertical-align: top;"><br>
            </td>
            <td style="vertical-align: top;"><br>
            </td>
            <td style="vertical-align: top;"><br>
            </td>
            <td style="vertical-align: top;"><br>
            </td>
          </tr>
          <tr>
            <td style="vertical-align: top; width: 25%;"><small> <img
 alt=".br compressed file" src="titles.png"
 style="width: 129px; height: 2px;"><br>
            <a name="br_file_format"></a>DOWNLOADS<br>
            <img alt=".br format" src="free-rar/extract-rar.png"
 style="width: 1px; height: 1px;" vspace="3"><br>
            <a href="index.html">All
PeaZip downloads</a><br>
            <a href="download-installer-p-windows.html">PeaZip for
Windows 32 bit</a><br>
            <a href="peazip-64bit.html">PeaZip
for Windows 64 bit</a><br>
            <a href="peazip-portable.html">PeaZip
Portable</a><br>
            <a href="peazip-linux.html">PeaZip
Linux/BSD</a><br>
            </small></td>
            <td style="vertical-align: top; width: 25%;"><small><img
 alt=".br extension" src="titles.png" style="width: 129px; height: 2px;"><br>
            <a name="what_is_brotli_format"></a>SUPPORT<br>
            <img alt="br file extension" src="free-rar/extract-rar.png"
 style="width: 1px; height: 1px;" vspace="3"><br>
            <a href="peazip-help.html">Online
help</a><br>
            <a href="peazip-help-faq.html">Frequently
Asked Questions</a><br>
            <a href="peazip-free-archiver.html">More
information</a></small><br>
            </td>
            <td style="vertical-align: top; width: 25%;"><small><img
 alt="br file type" src="titles.png" style="width: 129px; height: 2px;"><br>
            <a style="color: rgb(0, 0, 0);"
 name="brotli_compressed_files"></a>DONATE<br
 style="font-style: italic;">
            <img alt="br file format" src="free-rar/extract-rar.png"
 style="width: 1px; height: 1px;" vspace="3"><br
 style="font-style: italic;">
Support
PeaZip
project,
or donate to FAO,
UNICEF and
UNESCO from <a style="font-style: italic;" href="donations.html">donation
page</a><br>
            <br>
            </small><small>&copy; <a href="peazip-tos-privacy.html"
 style="font-weight: normal;">PeaZip
srl: TOS,
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                  <td style="text-align: right; vertical-align: middle;"><small><a
 target="_blank"
 href="https://github.com/giorgiotani/PeaZip/releases.atom">Releases
Feed</a></small></td>
                  <td
 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 alt="what are Brotli compressed files features and specifications"
 title="PeaZip releases feed" src="extract-zip/rss16.png"
 style="width: 24px; height: 24px;" align="middle"></small></td>
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                  <td style="text-align: right; vertical-align: middle;"><small><a
 target="_blank" href="https://github.com/giorgiotani/PeaZip/wiki">PeaZip
Wiki</a></small></td>
                  <td
 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 title="PeaZip Wiki online"
 alt="what is BR format, Brotli compressed files"
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                  <td style="text-align: right; vertical-align: middle;"><small><a
 href="mailto:giorgio.tani.software@gmail.com">Developer email</a></small></td>
                  <td
 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 alt="what are BR files, Brotli compression algorithm"
 title="Mail developer | Giorgio Tani" src="free-zip/mail.png"
 style="width: 24px; height: 24px;"><br>
                  </small></td>
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                  <td style="text-align: right; vertical-align: middle;"><small><a
 href="peazip-more.html">Search knowledge-base</a><br>
                  </small></td>
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 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 alt="br file format features" title="Search in PeaZip project domain"
 src="extract-rar/rar-opener.png"
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